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TI-2018-01005 Aliases CVE-2018-1086GHSA-p9pc-vgv7-x9j9

Improper input validation in Red Hat pcs

Priority LOW 37CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-200.

Summary

pcs before versions 0.9.164 and 0.10 is vulnerable to a debug parameter removal bypass. REST interface of the pcsd service did not properly remove the pcs debug argument from the /run_pcs query, possibly disclosing sensitive information. A remote attacker with a valid token could use this flaw to elevate their privilege.

Why it matters now

EPSS 0.01916 79th percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
Red Hatpcspcs 0.9.164; pcs 0.10—No fix listedCNA
  • pcs VendorRed Hat Affected pcs 0.9.164; pcs 0.10 Fixed in — No fix listed CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:a:clusterlabs:pacemaker_command_line_interface:0.9.164:*:*:*:*:*:*:*0.9.164VulnerableClusterLabs
cpe:2.3:a:clusterlabs:pacemaker_command_line_interface:0.10:*:*:*:*:*:*:*0.10VulnerableClusterLabs
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*7.5VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
  • cpe:2.3:a:clusterlabs:pacemaker_command_line_interface:0.9.164:*:*:*:*:*:*:* Versions 0.9.164 Vulnerable ·ClusterLabs
  • cpe:2.3:a:clusterlabs:pacemaker_command_line_interface:0.10:*:*:*:*:*:*:* Versions 0.10 Vulnerable ·ClusterLabs
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* Versions 7.5 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat

Remediation

Red Hat 2 advisories

  • RHSA-2018:1927 Released 2018-06-19 · Red Hat rating Moderate
    pcs security update
    • Red Hat Enterprise Linux High Availability (v. 6) pcs-0.9.155-3.el6
    • Red Hat Enterprise Linux Resilient Storage (v. 6) pcs-0.9.155-3.el6
  • RHSA-2018:1060 Released 2018-04-10 · Red Hat rating Important
    pcs security update
    • Red Hat Enterprise Linux Server High Availability (v. 7) pcs-0.9.162-5.el7_5.1, pcs-snmp-0.9.162-5.el7_5.1
    • Red Hat Enterprise Linux Server Resilient Storage (v. 7) pcs-0.9.162-5.el7_5.1, pcs-snmp-0.9.162-5.el7_5.1

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux High Availability (v. 6)Fixed RHSA-2018:1927
Red Hat Enterprise Linux Resilient Storage (v. 6)Fixed RHSA-2018:1927
Red Hat Enterprise Linux Server High Availability (v. 7)Fixed RHSA-2018:1060
Red Hat Enterprise Linux Server Resilient Storage (v. 7)Fixed RHSA-2018:1060
Not affected: 2 products
  • Red Hat Enterprise Linux 8
  • Red Hat Storage 3

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-1086
  2. 2026-10-03 Alias added: GHSA-p9pc-vgv7-x9j9

References

Advisory 4

  • TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
  • TI-2016-02888 Unspecified vulnerability in Oracle Java SE 6u113, 7u99, and 8u77; Java SE Embedded 8u77… KEVCVSS 3.1CRITICAL 9.8
  • TI-2015-04302 Use-after-free vulnerability in the BitmapData class in the ActionScript 3 (AS3)… KEVCVSS 3.1CRITICAL 9.8
  • TI-2015-04301 Use-after-free vulnerability in the DisplayObject class in the ActionScript 3 (AS3)… KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-02923 Out-of-bounds write in polkit KEVCVSS 3.1HIGH 7.8
  • TI-2018-10499 Integer overflow in backstage kernel KEVCVSS 3.0HIGH 7.8
See all 621 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences